Reading List Recommendation

I’d be thankful for some advice on good titles to share with my 9th-grade son. He was homeschooled from K-8th grade, but last year we made the decision to enroll him in a local Christian school. It has been a very hard transition for him, unlike two of his older brothers who were transitioned similarly. Bottom line: he just learns in his own unique way and the traditional classroom is challenging. He’s losing any love of learning, and I wonder if I can get some good books into his head that would ignite the fire of inspiration for him, not just academically, but especially to encourage his sagging heart. He has no strong interests of any particular kind yet, so I’m prepared to take a trial-and-error approach until I find a good fit for him. The only read-aloud that I remember sparking joy in him as a homeschooler was a biography of Albert Einstein. Are there any living books you’ve seen your young teen boys devour that I might consider? Thank you for any suggestions.